&nbsp310 &nbspFXUS01 KWBC 290812 &nbspPMDSPD &nbsp &nbspSHORT RANGE FORECAST DISCUSSION &nbspNWS WEATHER PREDICTION CENTER COLLEGE PARK MD &nbsp412 AM EDT WED AUG 29 2018 &nbsp &nbspVALID 12Z WED AUG 29 2018 - 12Z FRI AUG 31 2018 &nbsp &nbsp...A SLIGHT CHANCE OF SEVERE THUNDERSTORMS NEAR THE CANADIAN &nbspBORDER IN THE NORTHEAST TODAY... &nbsp &nbsp...FLOODING CONCERNS CONTINUE ACROSS THE UPPER AND MID MISSISSIPPI &nbspVALLEY AND INTO THE UPPER GREAT LAKES REGION TODAY... &nbsp &nbsp...TEMPERATURES WILL BE 10 TO 15 DEGREES ABOVE AVERAGE OVER PARTS &nbspOF THE MIDDLE ATLANTIC AND NORTHEAST... &nbsp &nbsp...FIRE WEATHER CONCERNS BEGIN TO RESURFACE ACROSS THE WESTERN &nbspU.S.... &nbsp &nbspA COLD FRONT IS CURRENTLY STRETCHING FROM EASTERN CANADA, &nbspSOUTHWEST ACROSS THE GREAT LAKES, MIDDLE MISSISSIPPI VALLEY, AND &nbspINTO THE SOUTHERN PLAINS, DIVIDING A STRONG RIDGE OF HIGH PRESSURE &nbspACROSS THE SOUTHEASTERN THIRD OF THE U.S., AND A MUCH COOLER &nbspAIRMASS MOVING SOUTHWARD FROM CANADA IN THE NORTHERN U.S.. A DEEP &nbspSURGE OF WARM, MOIST AIR IS BEING ADVECTED IN FROM THE GULF OF &nbspMEXICO, WHICH IS CLASHING WITH THE COLDER AIRMASS TO THE NORTH, &nbspRESULTING IN SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ALONG &nbspTHE FRONTAL BOUNDARY. THESE SHOWERS AND THUNDERSTORMS ARE BEING &nbspEXACERBATED BY A STRONG AREA OF LOW PRESSURE EMBEDDED WITHIN THE &nbspBOUNDARY WHICH IS CURRENTLY LOCATED OVER THE GREAT LAKES REGION &nbspAND EXPECTED TO MOVE TOWARDS THE NORTHEAST THROUGHOUT THE DAY. &nbspBOTH THE STORM PREDICTION CENTER AND THE WEATHER PREDICTION CENTER &nbspHAVE OUTLINED A NARROW REGION ALONG THE FRONTAL BOUNDARY, &nbspSTRETCHING FROM THE SOUTHERN PLAINS INTO THE NORTHEAST, AS HAVING &nbspA MARGINAL RISK OF SEVERE WEATHER AND EXCESSIVE RAINFALL TODAY, &nbspRESPECTIVELY. A SLIGHT RISK OF SEVERE STORMS IS ALSO OUTLINED &nbspALONG THE CANADIAN BORDER IN THE NORTHEAST TODAY, DUE TO IT'S &nbspPROXIMITY TO THE LOW PRESSURE CENTER AND BETTER CONVECTIVE &nbspPOTENTIAL DURING THE AFTERNOON. FLASH FLOOD WATCHES ARE CURRENTLY &nbspIN PLACE FOR PORTIONS OF THE MIDDLE MISSISSIPPI VALLEY AND THE &nbspUPPER GREAT LAKES REGION. A FLOOD WARNING IS ALSO IN PLACE ACROSS &nbspSOUTH-CENTRAL WISCONSIN, WHERE RECORD FLOODING IS ONGOING ALONG &nbspTHE KICKAPOO RIVER. EXPECT THE THREAT OF SEVERE STORMS AND &nbspEXCESSIVE RAINFALL TO DRIFT SLOWLY SOUTHEAST WITH THE FRONTAL &nbspBOUNDARY OVER THE NEXT COUPLE OF DAYS. &nbsp &nbspTHE STRONG RIDGE IN PLACE ACROSS THE SOUTHEAST WILL MAKE IT &nbspDIFFICULT FOR THE COLD FRONT TO MAKE MUCH EASTWARD PROGRESSION &nbspOVER THE COMING DAYS. MEANWHILE, THE DEEP SURGE OF WARM AND HUMID &nbspAIR TOWARDS THE BOUNDARY WILL COUPLE WITH THIS RIDGE, RESULTING IN &nbspA CONTINUED HEAT WAVE ACROSS THE REGION. MUCH OF THE NORTHEAST, &nbspAND PORTIONS OF THE MID-ATLANTIC ARE UNDER HEAT ADVISORIES FOR &nbspTODAY, AS HIGH TEMPERATURES ARE FORECAST TO BE IN THE MID AND &nbspUPPER 90S, WITH HEAT INDICES IN THE TRIPLE DIGITS. SOME LOCATIONS &nbspMAY ALSO MEET OR EXCEED DAILY RECORD HIGH TEMPERATURES TODAY. &nbspFURTHERMORE, MANY LOCATIONS SOUTHEAST OF THE COLD FRONT WILL &nbspLIKELY MEET OR EXCEED THE RECORD FOR HIGH MINIMUM/MORNING &nbspTEMPERATURE BOTH THIS MORNING AND THURSDAY MORNING. &nbsp &nbspELSEWHERE ACROSS THE U.S., FIRE WEATHER CONCERNS ARE STARTING TO &nbspCREEP BACK INTO THE PICTURE ONCE AGAIN FOR PORTIONS OF THE &nbspNORTHWEST. RED FLAG WARNINGS AND FIRE WEATHER WATCHES ARE IN PLACE &nbspACROSS MUCH OF WYOMING FOR TODAY AND THURSDAY DUE WARM &nbspTEMPERATURES, LOW RELATIVE HUMIDITIES, AND GUSTY WINDS. SOUTHWEST &nbspOREGON IS ALSO STILL UNDER AN AIR QUALITY ALERT DUE TO SMOKE FROM &nbspA NEARBY WILDFIRE. &nbsp &nbspWIX &nbsp &nbspGRAPHICS AVAILABLE AT &nbspWWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP &nbsp &nbsp